Nucleic acids are the building blocks of proteins so a b is rna and C is genes
In the model, a codon is identified as part of the mRNA strand. A codon is a series of three nucleotides on mRNA that codes for an amino acid.
mRNA
This is one form of RNA that serves as a template for protein synthesis. It is transcribed from DNA and then translated at ribosomes to produce a protein.
Answer: A = nucleus, B = plastids , C = ribosomes , D = cytoplasm
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